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after 1 February 1992)"
The existing text of paragraph 1.1 and footnote is replaced by the
following:
"1.1 In addition to complying with the requirements of Regulation 53
for cargo ships and with the requirements of Regulations 37*, 38 and 39
for passenger ships as appropriate, ship types and cargo spaces, referred
to in paragraph 1.2, intended for the carriage of dangerous goods shall
comply with the requirements of this Regulation, as appropriate, except
when carrying dangerous goods in limited quantities** unless such
requirements have already been met by compliance with the requirements
elsewhere in this Chapter. The types of ships and modes of carriage of
dangerous goods are referred to in paragraph 1.2 and in table 54.1, where
the numbers appearing in paragraph 1.2 are referred to in the top line.
Cargo ships of less than 500 tons gross tonnage constructed on or after 1
February 1992 shall comply with this Regulation, but Administrations mayreduce the requirements and such reduced requirements shall be recorded in
the document of compliance referred to in paragraph 3.
[* Reference is made to section 17 of the General Introduction to the
International Maritime Dangerous Goods Code (IMDG Code) for operational
measures in association with the requirements of this Regulation.]
[** Reference is made to section 18 of the General Introduction to the
International Maritime Dangerous Goods Code (IMDG Code) for a definitionof the term `limited quantities''".]
The existing text of paragraph 2.3 is replaced by the following:
"2.3 Detection system
Ro-ro cargo spaces shall be fitted with a fixed fire detection and
fire alarm system complying with the requirements of Regulation 13. All
other types of cargo spaces shall be fitted with either a fixed fire
detection and fire alarm system complying with the requirements of
Regulation 13-1. If a sample extraction smoke detection system is fitted,
particular attention shall be made to Regulation 13-1.1.11 in order to
prevent the leakage of toxic fumes into occupied areas."
Regulation 55 Application
The existing text of paragraph 5 is replaced by the following:
"5 The requirements for inert gas systems of Regulation 60 need not be
applied to:
.1 chemical tankers constructed before, on or after 1 July 1986
when carrying cargoes described in paragraph 1, provided that they comply
with the requirements for inert gas systems on chemical tankers developed
by the Organization*; or
[* Reference is made to Regulation for Inert Gas Systems on Chemical
Tankers adopted by the Organization by resolution A.567 (14).]
.2 chemical tankers constructed before 1 July 1986, when carrying
crude oil or petroleum products, provided that they comply with the
requirements for inert gas systems on chemical tankers carrying petroleum
products developed by the Organization **; or
[** Reference is made to Interim Regulation for Inert Gas Systems on
Chemical Tankers Carrying Petroleum Products, adopted by the Organization
by resolution A. 473 (XII).]
.3 gas carriers constructed before, on or after 1 July 1986 when
carrying cargoes described in paragraph 1, provided that they are fittedwith cargo tank inerting arrangements equivalent to those specified in
paragraph 5.1 or 5.2; or
.4 chemical tankers and gas carriers when carrying flammable
cargoes other than crude oil or petroleum products such as cargoes listed
in Chapters VI and VII of the Code for the Construction and Equipment ofShips Carrying Dangerous Chemicals in Bulk or Chapters 17 and 18 of the
International Code for the Construction and Equipment of Ships Carrying
Dangerous Chemicals in Bulk:
.4.1 if constructed before 1 July 1986; or
.4.2 if constructed on or after 1 July 1986, provided that the
capacity of tanks used for their carriage does not exceed 3,000 cubic m
and the individual nozzle capacities of tank washing machines do not
exceed 17.5 cubic m /h and the total combined throughput from the number
of machines in use in a cargo tank at any one time does not exceed 110
cubic m /h.
Regulation 56 Location and separation of spaces
The existing text of this Regulation is replaced by the following:
"(This Regulation applies to ships constructed on or after 1 February
1992)
1 Machinery spaces shall be positioned aft of cargo tanks and slop
tanks; they shall also be situated aft of cargo pump-rooms and cofferdams,
but not necessarily aft of the oil fuel bunker tanks. Any machinery space
shall be isolated from cargo tanks and slop tanks by cofferdams, cargo
pump-rooms, oil fuel bunker tanks or ballast tanks. Pump-rooms containing
pumps and their accessories for ballasting those spaces situated adjacent
to cargo tanks and slop tanks and pumps for oil fuel transfer shall be
considered as equivalent to a cargo pump-room within the context of thisRegulation, provided that such pump-rooms have the same safety standard as
that required for cargo pump-rooms. However, the lower portion of the
pump-room may be recessed into machinery spaces of category A to
accommodate pumps provided that the deck head of the recess is in general
not more than one third of the moulded depth above the keel, except thatin the case of ships of not more than 25,000 tonnes deadweight, where it
can be demonstrated that for reasons of access and satisfactory piping
arrangements this is impracticable, the Administration may permit a recess
in excess of such height, but not exceeding one half of the moulded depth
above the keel.
2 Accommodation spaces, main cargo control stations, control stations
and service spaces (excluding isolated cargo handling gear lockers) shall
be positioned aft of all cargo tanks, slop tanks, and spaces which
isolate cargo or slop tanks from machinery spaces but not necessarily aft
of the oil fuel bunker tanks and ballast tanks, but shall be arranged insuch a way that a single failure of a deck or bulkhead shall not permit
the entry of gas or fumes from the cargo tanks into an accommodation
space, main cargo control stations, control station, or service spaces. A
recess provided in accordance with paragraph 1 need not be taken into
account when the position of these spaces is being determined,
3 However, where deemed necessary, the Administration may permit
accommodation spaces, main cargo control stations, control stations, andservice spaces forward of the cargo tanks, slop tanks and spaces which
isolate cargo and slop tanks from machinery spaces, but not necessarily
forward of oil fuel bunker tanks or ballast tanks. Machinery spaces, other
than those of category A, may be permitted forward of the cargo tanks and
slop tanks provided they are isolated from the cargo tanks and slop tanks
by cofferdams, cargo pumprooms, oil fuel bunker tanks or ballast tanks.All of the above spaces shall be subject to an equivalent standard of
safety and appropriate availability of fire-extinguishing arrangements
being provided to the satisfaction of the Administration. Accommodation
spaces, main cargo control spaces, control stations and service spaces
shall be arranged in such a way that a single failure of a deck or
bulkhead shall not permit the entry of gas or fumes from the cargo tanksinto such spaces. In addition, where deemed necessary for the safety or
navigation of the ship, the Administration may permit machinery spaces
containing internal combustion machinery not being main propulsion
machinery having an output greater than 375 kW to be located forward of
the cargo area provided the arrangements are in accordance with the
provisions of this paragraph.
4 In combination carriers only:
.1 The slop tanks shall be surrounded by cofferdams except where
the boundaries of the slop tanks where slop may be carried on dry cargo
voyages are the hull, main cargo deck, cargo pump-room bulkhead or oil
fuel bunker tank. These cofferdams shall not be open to a double bottom,pipe tunnel, pump-room or other enclosed space. Means shall be provided
for filling the cofferdams with water and for draining them. Where the
boundary of a slop tank is the cargo pump-room bulkhead the pump-room
shall not be open to the double bottom, pipe tunnel or other enclosed
space; however, openings provided with gastight bolted covers may be
permitted.
.2 Means shall be provided for isolating the piping connecting the
pump-room with the slop tanks referred to in paragraph 4.1. The means ofisolation shall consist of a valve followed by a spectacle flange or a
spool piece with appropriate blank flanges. This arrangement shall be
located adjacent to the slop tanks, but where this is unreasonable or
impracticable, it may be located within the pump-room directly after thepiping penetrates the bulkhead. A separate pumping and piping arrangement
incorporating a manifold shall be provided for discharging the contents of
the slop tanks directly to the open deck for disposal to shore receptionfacilities when the ship is in the dry cargo mode.
.3 Hatches and tank cleaning openings to slop tanks shall only be
permitted on the open deck and shall be fitted with closing arrangements.
Except where they consist of bolted plates with bolts at watertight
spacing, these closing arrangements shall be provided with locking
arrangements which shall be under the control of the responsible ship''s
officer.
.4 Where cargo wing tanks are provided, cargo oil lines below deck
shall be installed inside these tanks. However, the Administration may
permit cargo oil lines to be placed in special ducts which shall be
capable of being adequately cleaned and ventilated and be to the
satisfaction of the Administration. Where cargo wing tanks are not
provided cargo oil lines below deck shall be placed in special ducts.
5 Where the fitting of a navigation position above the cargo area is
shown to be necessary, it shall be for navigation purposes only and it
shall be separated from the cargo tank deck by means of an open space with
a height of at least 2 m. The fire protection of such a navigation
position shall in addition be as required for control spaces in Regulation
58.1 and 58.2 and other provisions, as applicable, of this part.
6 Means shall be provided to keep spills away from the accommodation
and service areas. This may be accomplished by provision of a permanent
continuos coaming of a suitable height extending from side to side.
Special consideration shall be given to the arrangements associated withstern loading.
7 Exterior boundaries of superstructures and deckhouses enclosing
accommodation and including any overhanging decks which supper such
accommodation, shall be insulated to "A60" standard for the whole of theportions which face the cargo area and on the outward sides for a distance
of 3 m from the end boundary facing the cargo area. In the case of the
sides of those superstructures and deckhouses, such insulation shall be
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